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seropon [69]
4 years ago
11

Solve S=2πrh+πr2 for h

Mathematics
1 answer:
kirill115 [55]4 years ago
3 0
S= \pi rh+ \pi r^2\ \ \ \ | subtract\ \pi r^2\\\\
s-\pi r^2= \pi rh\ \ \ \ | divide\ by\ \pi r \\\\
\frac{s-\pi r^2}{ \pi r}=h
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Which is the correct solution to the expression 3 + 5^2?
Sindrei [870]

3 + 5² =

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Convert the angle in degrees to radians. Express your answer as a multiple of π.
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Converting 25 degrees to radians:

180° = π radians.

1° =  π/180  radians.

25° =  (π/180  radians) * 25

       =    (25/180) * π  radians.

Leaving the answer in terms of π,  25/180 = 5/36

=    (25/180) * π  radians = (5/36)π  radians  or ≈ 0.1389π radians.


Therefore 25° = (5/36)π  radians  or ≈ 0.1389π radians

I hope this explains it.

I think why you did not get it was because you did not leave your answer in terms of π or as a multiple of π, so as a multiple of π our answer is:

= (5/36)π  radians  or ≈ 0.1389π radians
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What number must you add to complete the square?<br> x^2 + 2x = -1
Andru [333]
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\large\begin{array}{l}\\\\\\ \textsf{Back to (i), adding 1 to both sides:}\\\\ \mathsf{x^2+2x+1=-1+1}\\\\ \boxed{\begin{array}{c} \mathsf{(x+1)^2=0} \end{array}} \end{array}


\large\begin{array}{l}\\\\\\ \textsf{If you want to solve this equation for x, you will find}\\\\ \mathsf{x+1=0}\\\\ \mathsf{x=-1}\quad\longleftarrow\quad\textsf{(solution)} \end{array}


If you're having problems understanding the answer, try seeing it through your browser: brainly.com/question/2112248


\large\begin{array}{l} \textsf{Any doubt? Please, comment below.}\\\\\\ \textsf{Best regards! :-)} \end{array}

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